tailieunhanh - Process Engineering Equipment Handbook 2009 Part 9

Tham khảo tài liệu 'process engineering equipment handbook 2009 part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | E-36 Emergency Power Generation Packages FIG. E-34 A definite purpose laminated frame AC motor. Source Reliance Electric. Emergency Power Generation Packages see Engines Gas Emissions Air Emissions see also Turbines Emissions from Burning Fossil Fuel Emissions from burning fossil fuel are SOx generally with coal-fueled boilers and steam turbine trains NOx with gas turbines CO2 with all turbines Particulates depending on the fuel If gas turbines fueled by gas or acceptable sulfur-free liquid fuel conform to current best available technology BAT as a rough rule of thumb emissions generally fall within national guidelines in most countries. Coal-fired power emissions will depend on the quality of coal sulfur and other impurities content . As a guideline the emission standards in a sample country Canada for new stationary turbines follow. National Emission Guideline for New Stationary Combustion Turbines 1. Emissions of oxides of nitrogen The emission targets see Fig. E-35 for various types of combustion turbines are determined by calculation of the allowable mass of NOx grams per unit output of shaft or electrical energy gigajoules as well as an allowance for an additional quantity of NOx emitted if useful energy is demonstrated to be recovered from the facility s exhaust thermal energy during normal operation. Allowable emissions over the relevant time period equal Power output X A heat output X B grams of NO2 equlvalent where Source Environment Canada document CCME-EPC AIT-49E pp. 4 5 and 9. Adapted with permission. Emissions Air Emissions E-37 FIG. E-35 NOx gas turbine emission guidelines sample conversion from grams GJ to ppmv for nonpeaking units . Source Environment Canada. Power output is the total electricity and shaft power energy production expressed in gigajoules GJ per MW-hour . Heat output is the total useful heat energy recovered from the combustion turbine facility. A and B are the allowable emission rates expressed in grams per gigajoule for the .